CUTE GIRL

We ran into one of my husband’s friend I had not seen in a very long while. As long as I can remember and even years before that this guy had an awesome girlfriend, she was smart, sweet, pretty, let him do what he wanted etc. After all the time they were together probably 5-7 years they split up about a year ago and he moved out of town, apparently he moved back and I am introduced to this girl who he is going to marry after only a year. Mr. Fear of commitment himself, and the kicker this bitch is CRAZY certifiable, jealous, mean, demanding, and not that cute (not that look matter) just saying. Why is this?